Printing-press chase.



E. KARL. PRINTING PRESS CHASE. APPLICATION FILED MAY 5, 1900.

Patented May 11, 1909.

lllll [Ill \ D II o ATTORNEYS a c. m: mums PETERS ca. WASHINGTON, D

TENT @Fldlflldi.

ERNEST KARL, OF LITCHFTELD, CONNECTICUT.

PRINTING-PRESS CHASE.

Specification of Letters Patent.

Patented May 11, 1909.

Application filed May 5, 1908. Serial No. 430,895.

To all whom it may concern:

Be it known that l. ERNEST KARL, a citimen of the United States, and a resident of Litchfield, 1n the county of lntchfield and State of Connecticut, have invented a new and Improved Printing-Press Chase, of which the following is a full, clear, and exact description.

This invention is an improvement in printing press chases, having for its purpose the elimination of the usual furniture and the provision of adjustable means forming a part of the chase for securing the forms in place.

ll ith this in view 1 construct the chase with the usual frame and slidably support in both its longitudinal and transverse inner edges, bars, each bar preferably consisting of a number of longitudinally spaced membe's rigidly connected together, and with the members of the bars running in one direction passing through the spaces between the members of the bars running in the opposite direction, whereby both the longitudinal and transverse bars extend substantially the full depth of the frame. The bars are provided with approximately square teeth on their outer faces, which are engaged in the corners by a locking block operating to hold the bars against outward movement.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is an inverted plan view of a printing press chase embodying my invention; Fig. 2 is a fragmentary perspective view of two intersecting bars, showing their attached guide-blocks and the locking block or key in engagement with their teeth; F ig. 3 is a cross section of the chase substantially on the line 3-3 of Fig. 1; and Figs. 4, 5 and 6 are fragmentary perspective views of intersecting bars illusirating different types of locking keys.

The frame 5 of the chase is constructed in the usual form of any approved size, and is rabbeted on its bottom inner edgeto form an inwardly-projecting top flange 6, which, in connection with a similar flange produced by letting into the under face of the frame, a metal auxiliary frame 7, forms guideways or grooves, as clearly shown in Fig. 2 and l partly shown in dotted outline in Fig. l. Slidable in these ways are blocks 8, each block having a wedge-shaped portion, as shown in Fig. 2, inwardly directed in order that they may overlap when brought together. Secured to corresponding blocks in the opposite edges of the frame are cross bars 9 and longitudinal bars 10, each bar preferably having a toothed outer face and being made up of a suitable number of longitudinally-spaced members which fit into the grooves in the blocks 8 and are rigidly connected together by screws, as shown, or other suit-able devices. The spacing between the members of the bars is the same as the depth of the lugs 9 adjacent to their opposite ends, which is equal to or slightly in excess of the thickness of the members, whereby the members of one bar may freely pass between or intermesh with the bar running in the opposite direction, without undue friction in sliding the bars back and forth. This manner of construction provides both transverse and longitudinal bars movable over each other, having thicknesses substantially equal to the depth of the frame.

The lugs 9 are of such width and so spaced that the teeth of the bars intermesh therewith and the bars are locked when they are moved to their extreme out-ward positions. For locking the bars against outward movement in intermediate positions I provide keys or blocks, several forms of which Ihave shown. That form of key 11 illustrated in Fig. 2 has a plurality of teeth on adjacent faces for intermeshing with the teeth of intersecting bars when placed in the corners. In Fig. i the key 11 is shown as having a single tooth on each working face, the teeth being separated by an intermediate stepped portion which adapts the key to lock the bar in a position between the locking positions of the key first described; thus the bars may be locked not only at points spaced apart the distances between the teeth but also at points spaced apart one-half of such distances. The key 11 shown in Fig. 5 is the same in all respects as that shown in Fig. 2, except that it has a single tooth on each working face; and the key 11 in Fig. 6 is in the orm of a square bar which operates to lock the chase bars in the same positions as the key shown in Fig. 4.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent,

1. A printing press chase comprising a frame having guideways in its inner edges, transverse bars within the frame, longitudinal bars within the frame, and blocks attached to the opposite ends of said bars, slidable in the guideways and provided with wedge-shaped extended portions adapted to overlap each other when the bars are brought together.

2. A printing press chase comprising a frame, two sets of toothed bars slidable in the frame, transversely and longitudinally arranged, each bar consisting of a number of longitudinally spaced members rigidly connected with the members of one bar and passing through the spaces between the members of the other bar, and spacing lugs carried by one set of bars, adapted to intermesh with the teeth of the other set of bars when the latter is moved to its extreme outward position.

3. A printing press chase comprising a frame having athickness approximately equal to the full thickness of the chase and rabbeted on its inner edge to form an inwardly-projecting flange, an auxiliary frame secured approximately flush to one face of the first mentioned frame and forming in connection with said flange, guide grooves, and longitudinally and transversely arranged bars having blocks attached to the ends thereof, slidable in said grooves.

In testimony whereof I have slgned my name to this specificatlon 1n the presence of two subscribing witnesses.

ERNEST KARL.

lVitnesses JOHN J. KARL, FREDERIO V. PEoK. 

